package cn.edu.zafu.bigdata.lmr;

    class Vehicle {
        public void move() {
            System.out.println("Vehicle is moving");
        }
    }

    class Car extends Vehicle {
        public void move() {
            System.out.println("Car is moving");
        }
    }
    class Bicycle extends Vehicle {
        public void move() {
            System.out.println("Bicycle is moving");
        }
    }
    public class Test4 {
        public static void main(String[] args) {
            Vehicle[] vehicles = new Vehicle[3];
            vehicles[0] = new Vehicle();
            vehicles[1] = new Car();
            vehicles[2] = new Bicycle();

            for (Vehicle vehicle : vehicles) {
                vehicle.move();
            }
        }
    }
